Comprehensive Application Of Fault Self-Healing Technology Based On Centralized Distribution Automation Terminal

In this paper,the main content is the study of distribution network self-healing control technology,combined with CX QX,present situation and the power supply reliability distribution network construction actual situation,through the distribution network self-healing control technology research,through the field equipment replacement,the background data quality improvement and technology integration application,enhance the level of technology demonstration zone distribution network operation management,improve power supply reliability,shortening the time of fault isolation.Through the intelligent distribution network fault detection,orientation and isolation technology,respectively for overhead cable line and puts forward the distribution network fault location,isolation and power supply restoration scheme,mainly put forward the main coordinated with in situ type feeder automation of self-healing control scheme,reliable from the traditional on-site type feeder automation.Based on the relevant achievements of the national "863 project" self-healing control technology and research and development of smart distribution network,this report presents the research on self-healing control of:1)optimization model of SDS restoration power supply methodIn view of the SDS is presented in this paper to restore power optimization model of the scenarios,including SDS undirected connected graph model of islands: 1-NKP problem definition and mathematical model based on 1-NKP problems are studied and the former SDS island partitioning strategy of greedy algorithm,realize containing SDS VG and energy storage device extremely serious fault state of recombination and local network power supply recovery: and through the test example results show that the practicability and effectiveness of the algorithm.2)SDS fault detection,location and isolation technologyThe fault location,isolation and power supply restoration schemes for overhead and cable lines are proposed respectively,and the self-recovery control scheme based on the coordination between the main station and the local feeder automation based on thecentralized control mode is put forward in order to solve the problem that the traditional local feeder automation cannot reliably realize the load transfer.At the same time,the field fault test was carried out to verify the self-healing scheme of overhead and cable lines.